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Finding the Fourth Proportional to 128,237.25, 177,016.77 and 114,784.77

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Solution

The fourth proportional to 128,237.25, 177,016.77 and 114,784.77 is: 158,447.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,237.25 : 177,016.77 = 114,784.77 : x
  2. Step 2: Convert to fraction form
    128,237.25/177,016.77 = 114,784.77/x
  3. Step 3: Cross multiply
    128,237.25x = 177,016.77 × 114,784.77
  4. Step 4: Simplify right side
    128,237.25x = 20,318,829,230.59
  5. Step 5: Solve for x
    x = 20,318,829,230.59/128,237.25
  6. Step 6: Final answer
    x = 158,447.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.